Intel 815E Bedienungsanleitung PDF herunterladen (Seite 42)

User’s Manual

32 ECB-865 User’s Manual

3.11.9 Signal Description – Floppy Connector (J6)

RDATA# The read data input signal from the FDD.

WD# Write data. This logic low open drain writes pre-compensation serial data to the selected FDD.

An open drain output.

WE# Write enable. An open drain output.

MOA# Motor A On. When set to 0, this pin enables disk drive 0. This is an open drain output.

MOB# Motor B On. When set to 0, this pin enables disk drive 1. This is an open drain output.

DSA# Drive Select A. When set to 0, this pin enables disk drive A. This is an open drain output.

DSB# Drive Select B. When set to 0, this pin enables disk drive B. This is an open drain output.

SIDE1# This output signal selects side of the disk in the selected drive.

DIR# Direction of the head step motor. An open drain output

Logic 1 = outward motion

Logic 0 = inward motion

STEP# Step output pulses. This active low open drain output produces a pulse to move the head to

another track.

DRVDEN0/1# This output indicates whether a low drive density (250/300kbps at low level) or a high drive

density (500/1000kbps at high level) has been selected.

TRAK0# Track 0. This Schmitt-triggered input from the disk drive is active low when the head is

positioned over the outermost track.

INDEX# This Schmitt-triggered input from the disk drive is active low when the head is positioned over

the beginning of a track marked by an index hole.

WP# Write protected. This active low Schmitt input from the disk drive indicates that the diskette is

write-protected.

DSKCHG# Diskette change. This signal is active low at power on and whenever the diskette is removed.

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Intel 815E Bedienungsanleitung Seite 42